Chair frame portion



FIG. 1 is a perspective view of a chair frame portion in accordance with our new design, with portions of a chair forming the environment of the chair frame portion and being illustrated in broken lines, which broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a front elevational view of the chair frame portion shown in FIG. 1;

FIG. 3 is a left-side elevational view thereof, the left and right sides of the chair frame portion being symmetrical to one another;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a chair frame portion, as shown and described. 